Reactive azo dyes



3,1585% REAiITlVE AZQ DYES Ulrich lilass and Hans Escher, Basal, dwitzerland, assignors to Sandoz Ltd Easel, Switzerland No Drawing. Filed dune 21, 336i, Ser. No. 118,543 Claims priority, application Switzerland dune 2d, 1960 1 (Cl. ass-ran This invention delates to water-soluble reactive azo dyes which contain at least one group of the formula -arylene-(CH NH-COR-Hal) (I) wherein R represents a divalent saturated or unsaturated aliphatic radical which may be substituted by halogen and possesses l to three carbon atoms,

n represents one of the integers 1 and 2,

Hal represents chlorine or bromine, and

arylene represents an arylene radical of the benzene or naphthalene series which may contain low alkyl or alkoxy groups and in addition halogen atoms and is combined to the N atom of a primary or secondary amine or of a S-pyrazolone ring.

The process of production consists in treating (A) Water soluble monoazo or disazo dyes having at least one aryl radical or" the benzene or naphthalene series which may contain low alkyl or alkoxy groups and in addition halogen atoms and is combined to an N atom of a primary or secondary amine or of a pyrazolone ring, or

(B) Organic compounds which contain an aryl radical of this type and one substituent capable of azo dye formation, with reaction products of formaldehyde or compounds which yield formaldehyde on cleavage and amides of low aliphatic saturated or unsaturated halogenocarboxylic acids, and converting the reaction products, when they contain radicals of organic compounds with substituents capable of azo dye formation, into water-soluble azo dyes by suitable reactions, the reactants being so chosen that the group CH NHCORHal enters into the aryl radical defined under (A) or (B).

The following are enumerated as examples of aryl radicals which may contain low alkyl or alkoXy groups and in addition halogen atoms and are combined to an N atom of a primary or secondary amine or of a 5- pyrazolone ring.

Phenyl; 2-, 31 and 4-methylphenyl; 2-, 3- and 4- methoxyor -ethoxyphenyl; 2.4- and 2.5- and 2:6-dimethylphenyl; 2.4.6-trimethylphenyl; 2.4- and 2.5-dimethoxyor -diethoxyphenyl; 2-chloro-4- or -6-methylphenyl; 2-methoXy-5-methylphenyl; Z-ethoXy-S-methylphenyl; 2-methoxyi-methylphenyl; 2-methyl-4- or -5- methoxyor -ethoxyphenyl; 4-chloro-2.S-dimethoxyphenylor -diethoxyphenyl; 4-chloro-2-methoXy-5-methylphenyl; naphthyl-(l), naphthyl-(Z), 2- and 4-methoxynaphthyl- 1) 2-chloro-4.6-dimethylphenyl-.

Paraformaldehyde and the symmetrical dichloroand dibromodimethyl others are examples of compounds which yield formaldehyde on cleavage The reaction products of formaldehyde or formaldehyde yielding compounds and the amides of low molecular aliphatic saturated or unsaturated halogenocarboxylic acids are the N-halogenomethyl and N-hydroxymethyl derivatives and the symmetrical ethers corresponding to the N-hydroxymethyl derivatives. Then can be derived for example from the following carboxylic acids: chloroacetic acid, bromoacetie acid, d-bromoand wChlOl'O- propionic acid, B-bromoor ,8 chloropropionic acid, oc-

ttcs Patent 0 brom-oor fl-bromobutyric acid, a-chloroor /3-chlor0- butyric acid, a,,8-dibromopropionic acid, u,B-dich1oropr0- pionic acid, a-ChlOlO- or u-bromoacrylic acid etc.

The production of the reactive azo dyes conforming to the invention is carried out by reacting N-halogenomethyl or N-hydroxymethyl derivatives of aliphatic, low molecular carboxylic acid amides which contain an exchangeable halogen atom combined to carbon, such as bromine or chlorine, and if desired other substituents, or the symmetrical ethers corresponding to the N-hydroxymethyl compounds, with water-soluble azo dyes or intermediate products suitable for azo dye synthesis which contain an aryl radical which may possess low alkyl or alkoxy groups and in addition halogen atoms and is combined to an N atom of a primary or secondary amine or of a S-pyrazolone. The reaction is conducted in concentrated sulfuric acid, preferably of 100% strength, or in concentrated phosphoric acid at temperatures between 0 and 30 C., the time of the reaction varying widely up to 50 hours according to the reactants.

Instead of reactingthe final azo dyes with the N-halogenomethyl or N-hydroxymethyl compounds on the symmetrical ethers corresponding to the N-hydroxymethyl compounds, the intermediate products used in their synthesis can be reacted and the resulting condensation products converted into water-soluble azo dyes by azo coupling.

Examples of intermediate products which can be used for this purpose are:

2- (2.4'.6'-trimethyl) -phenylamino-8-hydroxynaphthalene-6-sulfonic acid,

1- 2.4-dimethyl -phenyl-3-methyl-5-pyrazolone,

4-amino-4-ethoxy-1.1-diphenylamine-3-sulfonic acid,

4-amino-2.4'-dimethyl-1.1-diphenylamine-3-sulfonic acid and analogous dye intermediates.

The compounds given by the reaction can be precipitated from the sulfuric acid or phosphoric acid solution by the simple addition of water, or if necessary salted out and isolated.

The dyes obtained are used for dyeing, padding or printing, wool, silk, synthetic polyamide fibers, fibers of natural and regenerated cellulose such as cotton, linen, hemp, viscose filament yarn and staple fibers and for dyeing leather in yellow, orange, brown-red or violet shades. The dyeings and prints on wool and synthetic polyamide fibers, which are optionally submitted to a heat treat- Example 1 54.1 parts of the red dye obtained by acid coupling of diazotized 1-aminobenzene-Z-sulfonic acid with 2-(2.4'. 6'-trimethyl) phenylamino 8 hydroxynaphthalene-dsulfonic acid, are dissolved with stirring in 300 parts of 96% sulfuric acid at 15-20". Gn cooling to 05 25 parts of chloroacetic acid-N-hydroxymethylamide are added in portions and the temperature is increased to 20 in 1 hour. The mass is run onto 1200 parts of ice and stirred until the temperature increases to 10. The precipitated dye is filtered off, dissolved twice in 2000 parts of water and re-precipitated with 400 parts of common salt. It is filtered, washed with 20% common salt solution, dried with vacuum at room temperature over amass? sulfuric acid, or at 35-40" without siccative. A red dye is obtained which dyes wool and nylon in shades fast to light and wet treatments.

A printing paste is prepared with: 20 parts of the above-described dye, 100 parts of urea,

20 parts of potassium carbonate, 10 parts of sodium 3-nitrobenzene sulfonate, 3 parts of 30% sodium hydroxide solution, 450 parts of 3% sodium alginate thickening, 397 partsof Water 1000 parts The paste is printed on mercerized cotton fabric and dried. The print is steamed for 10 minutes at 102-104", rinsed in cold and warm water, soaped at 100 for 10 minutes in a 0.3% soap solution in distilled water, rinsed again with cold and warm water and dried. The red print is fast to light and wet treatments.

Example 2 38.6 parts of the yellow dye, obtained by coupling diazotized 1-aminobenzene-2.S-disulfonic acid with 1-(2'.4'- dimethyl)-phenyl-3-methyl-5-pyrazolone, are added to 220 parts of 96% sulfuric acid at 15-20 with stirring. At -5 13 parts of chloroacetic acid-N-hydroxymethyiamide are added in portions and the mixture stirred for 2 hours at 25. It is then poured onto 800 parts of ice, stirred for minutes and the precipitated dye filtered off. The dye is stirred into 1500 parts of water, neutralized with 75 parts of sodium bicarbonate and again filtered off. It is washed with 5% common salt solution and the filter residue dried below 40 with vacuum. The yellow dye which is obtained in good yield dyes wool, silk and synthetic polyamide fibers in shades fast to light, washing and milling.

2 parts of the dye thus obtained are dissolved in 4000 parts of cold water. The solution is heated to 40, 2 parts of glacial acetic acid and 3 parts of a mixture of a polyoxyethylated fatty amine and an alkylpolyglycol ether are added; then 100 parts of a wool fabric are entered in the bath. The bath is brought to the boil in -20 minutes and maintained at the boil for 45-60 minutes. At 85-90 about 5 parts of 5% ammonia or 3 parts of hexamethylenetetramine are added and heating is continued for minutes at 90. The wool is then rinsed well, with a little acetic acid in one lot of the rinsing water, and dried. A level yellow dyeing fast to washing, perspiration and milling and of good light fastness is obtained.

Example 3 52.7 parts of the red dye produced by acid coupling of diazotized l-aminobenzene-Z-sulfonic acid with 2(2.4'- dimethyl) phenylarnino 8 hydroxynaphthalene 6- sulfonic acid, are dissolved with stirring in 300 parts of 96% sulfuric acid at 15-20". The solution is cooled to 0-5 and at this temperature parts of di-(B-chloropropionylaminomethyl) ether are added in portions; the temperature is allowed to increase to 20 in 1 hour, and the whole run onto 1200 parts of ice. After stirring until the temperature increases to 10, the precipitated dye is filtered off. It is twice dissoived in 2000 parts of Water and again precipitated with 400 parts of common salt. It is filtered off, washed with 20% common salt solution and dried with vacuum at room temperature over sulfuric acid, or without a siccative at -40. A red dye is obtained which dyes wool, nylon, cotton, and viscose rayon in shades fast to light and wet treatments.

Example 4 35.7 parts of 2-(2'.4-'.6'-trimethyl)-phenylamino-8-hydroxynaphthalene-6-sulfonic acid and 25.5 parts of chloroacetic acid N-hydroxymethylarnine are added as a powder mixture to 125 parts of 92% sulfuric acid at 15 to l0 and stirred for 3 hours while the temperature is allowed to increase to +15. The whole is then run onto about 900 parts of ice and stirred for 1 hour, the temperature being maintained below 15. The precipitated reaction product is filtered off. It is dissolved again in 800 parts of cold water, the solution neutralized at 5-10" with sodium hydroxide solution to pH 6-7, clarified with activated charcoal, and the product salted out with 100 parts of common salt, filtered with suction and dried at with vacuum. The gray powder obtained is coupled in acid medium with diazotized 2-arninobenzene-l-sulfonic acid to give a dye identical with that of Example 1.

Example 5 29.2 parts of 3-amino2.4-dirnethyl-1.1-diphenylaminel-sulfonic acid are dissolved at 10-15 in 250 parts of 96% sulfuric acid. At 0-5 a solution of 12.2 parts of chloroacetamide and 7.5 parts of symmetrical dichlorodimethyl ether in 150 parts of 100% sulfuric acid, which has previously been stirred for 24 hours, is added dropwise. The reaction mixture is stirred for 20 hours at 10-15 and subsequently discharged onto ice to precipitate the reaction product. This is filtered off and stirred into 500 parts of water. The suspension is neutralized with sodium hydroxide solution to a pH value of 5-6, the product again filtered off and dried at 40 with vacuum. It is then diazotized in the normal way at 5- 107 with 26-28 parts of 4-N-sodium nitrite solution. A light gray diazo suspension is obtained which is added at 10-l5 to a solution of 30 parts of l-(2.5-dichloro)- phenyl-3-rnethyl-5-pyrazolone-4'-sulfonic acid and parts of sodium bicarbonate in 600 parts of water. The yellow dye thus formed is precipitated during coupling. After stirring for 1 hour it is filtered oh? and stirred into 1 liter of water. The suspension is adjusted to a pH- value of 5-6 with acetic acid and the dye filtered off. On drying at 40 with vacuum a golden-yellow dye in powder form is obtained which can be dyed on wool from a weakly acetic acid medium and printed on cellulosic fibers with alkaline printing pastes. The dyeings possess good fastness to Wet treatments.

When in place of the above-mentioned pyrazolone-sulfonic acid, 29 parts of 1-hydroxynaphthalene-4.6-disulfonic acid are used and the same procedure followed in all other respects, a red dye with similarly good fastness properties is obtained.

Example 6 52.5 parts of the orange-colored dye which is obtained .by acid coupling of diazotized l-amino-Z-methylsulfonylbenzene and 2-(2.4'-dimethyl)-phenylamino-5-hydroxynaphthalene-7-sulfonic acid, are stirred with 20 parts of sodium bicarbonate into 500 parts of water. A sulfuric acid solution of the diazo compound, which has been prepared from 17.3 parts of l-aminobenzene-2-sulfonic acid and 6.9 parts of sodium nitrite, in 200 parts of water, is added. A red-brown dye is formed which is precipitated at 10 with parts of sodium sulfate and 30 parts of 92% sulfuric acid. It is filtered off and pressed in the filter down to a dry content of about 50%. cake is stirred in portions into 250 parts of 96% sulfuric acid at 0 and subsequently 150 parts of 20% oleurn are added. The mixture is stirred for 1 hour. Then the following stock solution is added:

A powder mixture of 12.2 parts of chloroacetamide and 6 parts of paraformaldehyde is stirred in small portions into 150 parts of 100% sulfuric acid at 5-10" and stirred for 20 hours without further cooling. In 1 hour at 0-5 this stock solution is added dropwise to the dye solution in sulfuric acid, prepared as above. The reaction mixture is stirred for 20 hours and then run into 2000 parts of ice. The red-brown dye is precipitated, filtered off and stirred into 500 parts of water. Sodium hydroxide solution is added to neutralize to a pH-value of 5-6, then 60 parts of common salt are added and This filter stirred continued for 30 minutes. The precipitated dye is filtered off and dried at 40 with vacuum. brown powder which dissolves in water with brown-red coloration and dyes wool from a Weakly and dyebath in red-brown shade-s.

The following table contains further reactive dyes Itisa Shade of the Dye- Examplc Coupl ng m on N o. Diazo Component Coupling Component Conditions Reactive Component Vgool or otton (V) 7 Zaminobenzene-Lsulfonic acid 2-(4-mcthy1)-phenylamino-8-hydroxy- Acid Chloracetic acid N-chloromethyl- Red.

riaphthalene-fi-sulfonic acid. ami e. 8. do l-(4-inethyl)-phenylamino-8-hydroxy- Alkaline Chloracetic acid N-hydroxymcthyl- Violet.

naphthalene--sulfonic acid. amid. 9 do 2-(2.4-dinicthyl)-phenylamin0-5-phen- Acid Chloracctic acid N -chloroznethyl- Orange.

ylsulfonyloxynaphthalene-7-sulamide. fonic acid. 10 do 1-(%-Inethyl)-phcnyl-3-methyl-5-pyraz- Alkalinc do Yellow.

one. 11 2-ainins -chlorobcnzenc-1-snlfonic 2-(2.4.6-tri1ncthyl)-plienylamino-8- Acid a-Ohloracrylic acid N-chloromcthyl Red.

acid. hydroxynapiithalenc-fi-sulfonic acid. amide. 1c 4-2Dni110l1811ZQI1B-1-5l11f01ii0 acid do do a-fi-Dichlorpropionic acid N-chloro- D mcthylamide. 13 Z-aminobenzciic-l-srdfonic acid 1-(2-chloro-4.6-dimethyl)-pheny1-3- Alkaline" Bromacctic acid N-chloroincthyl- Yellow.

metl1yl5-pyrazolone. amide. 14 do l-(4-metho.w)-plienyl-3-methyl-5- do Chloroacctic acid N-chloromethyl- Do,

pyrazolone. amide. 15 do 2-(2.4-dimetl1yl)-pheny1amin0-8- Acid a-Bromopropionic acid N-cliloro- R d,

hydrcxynaphthalciie-G-sulfonic acid. methylamide. 16 do do do wChlorobropionic acid N-chloro- Do.

mcthylainidc. 17 do 2-(2.5-dimethyD-phcnylamino-B- do do D hydi'oxynaptlialenc-li-sulionic acid. 18 3-aniinobcnzcne-1-su1fonic acid 1-(2.4-dinicthy1)-phenylamino-8- do Chloracetic acid N-hydr0Xymcthyl- Violet.

hydi'oxynapthalencA-sulfonic acid. amide. l9 4-aminobenzcne-LS-disulfonic acid 1-(et metiiyl)-phenyl-3 mcthyl-5- A1kaline Dig-chloropropionylaminomethyl) Yellow.

pyrazo one. e er. 2O do 2-(2.4.6trimctliyl)-phcnylamin0-8 Acid a-Bromobntyric acid N-chloro- R d,

hydi'oxynanlithalcne-6-s11lfonic acid. methylamide. 21 2-2111liH0-1-Ki10lZl1ylSl1lf0Ilylb11Z116-1- fi-Chlcrobutyric acid N-chloro- Do.

sulfonic acid. methylamide. 22 2-arnino4anetliylbenzcne-l-sulfonic do Q'fl-DlbI'OmOPIODlOHlO acid N- D acid. chloromethylamide. 4-ainino-2-nietliyl-1.l-az0be11zcn6 do do a-Bromoacrylic acid N-chloromethyl- Violet- 4-suhonic acid. amide. red. 3 aminobcnzcnc-l-sulionic acid do do.. a -Chlor0butyric acid N-chloro- Red,

methylainide. 4-amiiio-l.1-azobcnzene3.4-disull-( il -etlioxy)-pl1cny1-3-1ncthyl-5-pyraz- Allraline Di-gbromopropionylaminomcthyl) Yell w,

ionic ac 0 one. e er. 2-amiiionaphtlialene-1.8-disulfonic l-naphthyl-(l)-3-methyl-5-pyraz0lone. do Chlorcetic acid N-hydrcxymethyl- Do,

acid. and e. 2 ami'iionaplithalcne-4.6.8-trisulf0nic l-naphthyl-(2)-3-metiiyl-5-pyraz0l0ne do do D acid. d0 1-(4-nietlioxy)-naphthy1-(l)-3-methyldo do D 5-pyi'azol0ne. 29 4-aminobcnzei1e-1.3disulionic acid- 1-(2-ethoxy)- aphthy1-(l)3-methyldo wChloroacrylic acid N-chloro- Do.

5-pyi'azolonc. mcthylamidc. 30 2-aininobcnzenc-1.4-disu1foiiic acicL. 1-(2-mcthoxy)-i1aphthy1-(1)-3-mcthyldo Chloracetic acid N-hydroxymethyl- Do,

S-pyrazolone. amide. 31 do l-(4-1nethyl)-pheny1-3-mcthyl-5- do fi-Bi'oinobiityiic acid N-chloro- D pyrazolonc. mctliylamide. 3.. Z-aminobenzene-l-sulfonic acid l-(2.5-dinictliy1)-plienyl-3-methyl-5- do u-Chlorobutyric acid N-chloro- Do,

pyrazolone. methylamide. 33 do 1-(4-mcthy1)-phci1y1amin0naph- Acid Chloracetic acid N-hydi'oxymethyl- Red tl1alciic-8-sulf0n ic acid. amide. 34 do 2-(4-mcthoxy)-pheny1amm0-5-hydo afi-Dibromoprcpionic acid N- D droxynaphthaleneJ-sulfonic acid. chlorornethylamide. 35 do 2-(4-ethoxy)-phcnylamino-5d1ydr0xy- Alkalina. afi-Dichloropropionic acid N- D() naphthalcne-7-Sulfonic acid. chloromcthylamide. 36 do 2-(4-ctlioxy)phenylamino-8-hydr0xy- Acid Chloracetic acid N-hydroxymethyl- D naplithalcnc-6-snlf0nic acid. amide. 37 do 2(3-metlioxy)-phcnylmaino-8-hydo do D droxynaphthalene-fi-sulfonic acid. 38 zaminonaphthalenc-5.7-disu1fonic 2-(2-niethow-5-mcthy1)-phcnyldo do D acid. amino-S-hydroxynaphthalene-G- snllonic acid. 39 2-aminonaphtlialene-6.8-disulf0nic 2-(4-1iiethoxy)-phcnylamm0-8-hydo do D ac dioxynaphthalene-6-sulfonic acid. 40 I-aminonaphthalciie8.6-disulf011ic 2(3-ethoxy)-phenyian ino--hydroxy- ..-do do D a naphthalcne-6-sulfonic acid. 41 l-amillollflphthfileIlG-l.6-dlS1l1f0ni0 2-(5.5-dimeth0xy)-phcny1am1n0-8- do. do D ac hydi'oxynaplithalcne-dsulfoiiic acid. 42 l-aminonaplithalenc-3.S-disulfonic 2-(2.6-dimcthy1)-phenylamino-Ei- -d0 do D acid. liydroxynaphthalenc-dsulfonic acid. 43 1-aIilinOn2phth2.lehG 4.8 diSlllfODiC l(2.4-diinetlioxy)-phcny1-$-mcthyl- Alkaline" do Y ll w,

acid. 5-pyrazolone. 44 -1-an1inobcnzenc1.3-disulfonic 1-(2.5-diethoxy)-phcnyl-3-methyl-5 do do D acid. pyrazclone. 45 do 2-(2.5-dirnethoXy-4-chl0r0)phenyl- Acid do R i amin0-8-hydroxynaphthalene-6- sulfonic acid. 46 do 2-(2-metliyl-4-etliow)-phe1iylaminodo do D 8-1ig1 droxynaphtl1a1ei1e-6-suli'oi1ic aci 47 do 1-(2'-Chl0lO-4'111Gth1)-p11011YI-3- Alkaline do Y ll mcthylpyrazolone. 48 do l-(3i-inetl1yl)-phenyl-3-methyl-5-pyi'azdo do 13 0 one. 49 do 1-(2-methoxy-5-methy1)-phenyl3- do do R methy1-5-pyrazolone.

Shade of the Dye- Example Coupling ing on N o. Diazo Component Coupling Component Conditions Reactive Component lgocl or otton 2-aminobenzene-1-siilionic acid Z-(T-methoxy-an ethyl) -phenyi- Acid Chloraectic acid N-liydroxymcthyl- Red.

amino-S-hydroxynaplithalene-oami e. sulionic acid. 51 .do 2-(2methoxy-4'-chloro-5-metliyl)- -do wchloracrylic acid N-cliloro- Do.

phenylamino-S-hydroxynaplitliamethylainide. lcne-6-sulionic acid. 52 .d0 2-(2-metliyl-5-ethoxy)-phenylamino- -.do do Do.

8hgdroxynaphthalene-fi-sulfonic aci 53"--- .do 2-(2-etl1oxy5-methyl)-phenylamino- .do .do Do.

8-lggdrOxynaphthalenc-(i-sulfonic aci 54- 4-aminobcnzene-1.3-disu1fonic acid 1-(2'.5-diethoxy-4-chl0ro)-phenyl- Alkaline- Chloracetic acid N'hydroxymethyl- Do.

3mothyl-5-pyrazolone. amide. 55- do- 1(2.4dimetl1yl)-plicnylaminonaph- Acid d0 Do.

- thalene-Eisulionie acid. 56 4-amino-2.4-dimetliyl-1.1-di- 1-(2-metl1yl-6-ch1oro)-plienyl-3- Alkaline .do Yellow.

phenylamine-3-sulionic acid. meiihyl-5pyrazolone-4-snlionic acir 57 .do- 2acetylamino-E-hydroxmiaphthalene- -do -do Red.

fi-sulionic acid. 58 do l-hydroxynaplitlialenedsulionic acid. do wOhlodi-acrylic acid N-chloromethyl- D0.

aim e. 5S) do l-acetylaniino-8-liydroxynaphthalened0 d0 Violet.

3.6-disulfanic acid. 60 do do d0 a.,S-Dichloroproplonic acid N- Do.

chloromethylamidc. 61 4-amino-4-ethoxy-1.l-diplienyl do e do Di-(B-chloropropionylaminomethyl) Do.

amine3-sulionic acid. ether. 62 -amino-4-methoxy-l.1-diphcnyll-liydroxynapiithalene-4.6-disulionic -d0 Chloracetic acid N-hydroxymet-liyl- Red.

amine3-sulionic acid. acid. amide. 63- -do 2-liyd1roxynaphthaleneiG-disulionic d0. do D0.

aei 64 do 1-(2 .5 -diclii0ro)-plmnyl-3-mctl1yl-5- do do Yellow.

pyrazolone-4-sulionic acid. 65- do l-phcuyl-Zi-methyi-S-pyrazolonc-4- io d0 Do.

sulfonic acid. (36 4-amiuo-2-methoxy-5-methyl-i.l'- 2-hydroxynaphthalene-3.6.S-trisulionic d0 Bromacetic acid N-hydroxymethyl- Red.

diphenylamine-S-suiicnic acid. acid. amide. 67 .d 1-pl1eiiyl-B-metl1yl-5-pyrazolone 2'.4- d0 Cliloracetic acid N-cliloromethyl- Yellow.

disuli'onic acid. amide. 68 4-amino-2.5 dirnetliyl-1.1'-di- 1-phenyl3-methyl-5-pyrazolone-3'- -d0 -do Do.

phenylamine-3-sulionic acid. sulionic acid. 69 do 2-propionylamino-8-hydroxynaph dc a.3-Dichl0r0propionic acid N-chloro- Orange.

thalene-fi-sulionic acid. methylamide. 70 4-amino2.4.6-trimetliyl-1.1-dil-propionylamino-Bdwdroxynathd0 Chloracetic acid N-hydroxymethyl- Red.

phenylamine-fi-sulfonic acid. tlialene-3.6-disulionic acid. amide. 71 .do l-phenyi-3-methyl-5-pyrazolone-2.5'- do do Yellow.

disulfonic acid. 72 Z-aminobenzene-l-sulfonic acid l-(iK-etliyl)-phcnyl-3-mcthyl-5- do -.do Do.

pyrazolone. 73 .do 2-(3-etliyl)-phenylamino-8-hydroxy- Acid do Bed.

naphthalene-(i-suifonic acid.

The following table contains disazo dyestuifs being characterized by the components A, B, C belonging to the disazo formulae AN=NB--N=NC, the reactive component (IV) and the shade of the dyeing on wool or cotton (V):

Shade 011 Exam. Reactive Component wool or pie No. A B O cotton 74 2-(2'.4di1nethyl)-phenylami1io- 4,4'-diamino-3,3-dimetliyl-1.1 Phenol, esterified with 4- Chloracetic acid-N- Brown S-hydroxynaphthalene-ddipheny1-6.6-disulionie acid. methylbenzcne-sulionyl hydroxymetliylred. sulionic acid (coupled in an ClllOlldB. amide. acid medium).

75 2-(2.4.6-tiimetl1yl) phenyl- 4.1'-dlflm1I 10-1.Y-dlphGHYl-Gly- 2-(2.4.6-trimethyl) plicnyldo Violet; amino-841ydroxynaplithalenedisuliomc acid. amin0-8-hydioxy-naphthalblue. fi-sulfonic acid (coupled in an ene-G-sull'ome acid. acid medium).

76 2-(4-methyl)-phcuylaniiiio-S- 4.4'-diamin0-3.3'-dimethyl-1.1- 1-mcthyi3-ammobenzcne a-Cliloracrylic acid- Brownhydroxynapthalcne-G-suldiphenyl-G.6-disuli0nic acid. (coupled in an acid medium) N-cliloromctliylred. ionic acid (coupled in an acid and acylatcd with acetic acid amide. medium) anhydride.

77 2-(4'-methyl)-phenylaminodo 1-amiu02.5-dimethylbenzcne Ohloracetic acid-N- Red.

naphthalcne-G-sulfonic acid acylated with chloracetic hydroxymetliyl- (coupled in an acid medium). acid chloride. amlde.

78 2-amino-4-cl1loro4-tertiary 1-amino-3-(N-4-metliylpi1enyl- 2-(2.4-dimetliyl)-phenylammodo Navyamyl-1.1-diphenyl ether (as sulionyl)-aminobenzene-6-sulic- 8-11ydrogrynaphthalene-ti-sulblue. diazo component). nic acid (coupled in a weakly ionic acid (coupled in an acid alkaline medium and diazotized medium). afterwards) 7 7S 2-amiuo-4-chloro-4-tertiary i-aminc-B-(N-4-methylphenylsul- 2-(4'-methyl)-phenylamin0-8- Chloracetic acid-N- Do.

amyLLY-diphenyl ether (as ionyl)-aminobenzene-6-sulionic hydroxynaplithalene-fi-sulhydroxymethyldiazo component). acid (coupled in a wealky alkaionic acid. amide.

line medium and diazotizcd afterwards) 80 do 1-amino-3-(N-qnethylphenyl- -.d0 a-Ohloiaeyrlic acid- Do.

suliony-N-metlily)-aminoben- N-chloromethylzenefi-sullonic acid (coupled in amide.

a weakly alkaline medium and diazotized afterwards).

3, 1 5 8, 5 97 I 9 10 Formulae of representative dyes of the foregoing examples Example 6: are as follows: Examples 1 and 4: CH3

CH I

10 OH S0 11 no s I1I=N Example 2: I

OH; SO H so B 1 15 3 CN@OH3 o I N=N Having thus disclosed the invention what we claim is H NHOO--CH C1 \C=N a The dye of the formula SOaH m Example 3:

(IJHS CH3 so H so H Example 5: a 3

01 CH so H I I a a C-N-QSO H 0H,- NHON=N0 I l CH -NHO 043E201 (1:113

References Cited in the file of this patent UNITED STATES PATENTS 2,199,048 Graenacher et a1 Apr. 30, 1940' 2,741,656 Schmid et al Apr. 10, 1956 2,904,543 Kappeler et a1 Sept. 15, 1959 2,975,167 Schwander et a1 Mar. 14, 1961 2,993,885 Fasciati July 25, 1961 

